Cooking stove



y 9- R. LMONTGOMERY 1.719.7l7

COOKING STOVE Filed Aug. 1928 2 sheets-she'et 1 R .Jmgbz/y 'July 2, 1929. MONTGOMERY 1,719.7l7

` COOKING STOVE Filed Aug. 1928 2 Sheets-Sheet 2 A Za" lvwnto a fzliworzgomry W /a d v Patented July 2, 1929.

UNITED ASTATES TPATENT OFF 1,719,* 717 ICE,

ROBERT LEE MONTGOMERY, OF IBONDALE, MISSOURI.

cooKINe strovE.

Application' filed August 11, 1928. i Serial Ne. 239,034.

This invention relates to the class of cooking stoves and aims particularly to provide an improved type of cookingcstove having a plurality of ovens advantageously positioned about the source of heat.

One of the primary objects of this invention is to provide a cooking stove having a v p set up.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of'this specification, with the understanding, however, that the invention is not confined to any strict confornity with the showing of the drawings but may be changed or modified so long as such changes or modifications mark notmaterial departure from the salient features of the invention as expressed in the ap pended claims.

In the drawings Figure 1 shows astove structure embodying the present invention, in front elevation, a portion thereof being broken away; to show the heating unit therein;

Figure 2 is 'a central longitudinal section through the heating unit showing the interior detail Construction of thesame;

Figure 3 is a detail sectional view taken e v upon the line 3-3 of Figure 1;

' line 4-4 of Figure 2;

Figure 4 is a sectional view taken upon the Figure 5 isa detail sectional view of a fuel control valve;

Figure 6 is a face view of a movable member of the valve. i

In the d'awings, the numeral 1 indicates generally the stove structure embodying the present invention which comprises a pair of ovens 2 and 3 supported upon suitable legs 4 and connected by the front and rear walls 5 and 6 respectively. Each of the ovens is provided with a door 7 by means ofwhichaccess 'is had to the interier thereof. i A chamber 8 is formed between the ovens 2 andB in which a portion of the stove heating unit, h er-einafter described, is postioned;

The tops 9 of the ovens 2 and .3 are connected ver the chamber 8 forming a top in which there is formed a crcular opening 10.

At one side of the opening 10, over one of the ovens, there is postioned a supplemental oven 11 while at the opposite side over the other oven, as for example over the'oven 2, there is postioned or -mounted upon-the top of this oven a, water tank 12 which Supplies water to the heating system of the under-lying oven, as will behereinafter described.

The heating unit for the present stove structure is designed to be operated by gasoline and comprises a tank 13 having the head portion 14 which is provided withga nozzle structure 15. The tank 13 .is also provided with the valve opening 16 and an air inlet valve 17 to which an air pressure pump may be attached to force air into the tank so that the contents thereof may be pressure fed to the nozzle. e i

A fuel supply line 18 that leads from the interier of the tank 13 to one face of a disk member 19 is rotatably nounted in the head 14 in. the manner shown in Figure 2. The 'disk1-9 is carried upon the inner end of the control shaft 20 which extends through the head and projects through the wall thereof and carries upon its outer end an indicator disk 21 on which suitable indicia is forned for coaction with an indicated point upon the head for determination of the proper po- 'sitioning of the valve disk 19 when the same ture 24 in the fixed disk to the burner nozt zle 15 of the heater unit.- The outer end of the control shaft 20 is formed to receive the' shaft of a key 26 by means of which the valve is controlled, the removal of the key making the stove safe in that unauthorzed .persons cannot ta mper with' the fuel feed line.

The head 14 of the tank carries a standard 27which in turn supports an apertured cone or basket 28 over the nozzle wherein the fuel issuing from the nozzle miXes and burns with air in the atmosphere giving a burner of the blow torch type.

Mounted upon the head 14 is a eollar 29 which is provided with the surrounding vertical slits 30 by means of which air is permitted to reach the interier of the unit. This eoliar 29 opens upwardly through an opening 31 in the joined floor sections 32 of the two ovens 2 and 3, the top edges thereof contacting with the under face ofthe oven floors at the edge of the opening. i

Extending from the opening 31 upwardly to the opening 10,'hetween the ovens 2 and. 3, a chimney 33 of inverted bell-shaped. configuration. The lower end of this chimney is provided with the annular fiange 34 which rests upon the bottoms 32 of-the ovens when the said end is extended through' the opening 31 in the manner shown in Figure 2. The upper edge of the chimney extends through the opening 10 and bears against the edge thereof as is also shown in this figure and the inner wall of the chimney at the top is provided with the annular ledge upon which rests the circular head plate 36. This plate ispreferably made up of a plurality of individual sections anyone of which may be i removed so that more intense hoat can be had. e

VVithin the chimney 33 adjacent the lower end thereof there is forned about the wall the annular flange 37 for the support of a fire ball which is `indicated as a whole-hy the numeral 38. This fire ball 38 is made u p of a series of vertically arranged arcuate sections 39 which are Secured together at one end by suitable bolt memberspassing through the plate 40. This end of the ball which is of sonewhat oval-shape is arranged uppermost when the same is in position within the chimney. The sections 39 of the fire balli are .maintained in such relation as to form openings or slits 41 therebetween.

The adjacent other ends of the sections 39 are provided with the depending flanges 42 and these ends are n'aintained in spaced relation by the spreader ring 43 which is slipped into the hall and. positioned in the groove 44 which is formed across the inner face of each of these sections. An associate ring 45 engages over the depending flanges 42 of the ball sections and limitsthe Spreading action of the ring 44 thereon.

Surroumling the fire ball at a point adjacent the open end thereof is an annulnr body 46 which is designed to rest upon the flange 37 of the chimney to maintain the hall in upright position therein with the open lower end directly over the cone 28. In this manner the flames of the burning fuel issuing from the cone will pass directly into the fire ball and leave, the same through the longitudinal slits 41 thereof,

The inner faces of the sections 39 of the fire ball are provided with transverse upwardly extending slots 47 which provide additional heating surface for the unit.

WVithin the upper portion of the chimney 33 there is positioned the apertured deme 49, the convex face thereof being directed downwardly as shown.

surrounding and overlying the deine 49 is an annular water heating pipe 50 which has the transverse pipe 51 extending diametri'- cally thereacross and over the top of the dome 49. The annular pipe 50 is connected by the supply pipe 52 with the lower portion of the water tank 12 and also has a pipe line 53 leading therefrom to a feed pipe coil 54 positioned in and extending across the lower part of the oven 2. This coil 54 may be supported in any suitable manner as, for example, upon a flat frame 55 or the like.

A suitable pipe connection is made with the coil 54 and led to the exterior of the oven 2 where a d raw-ojti' faucet 56 is connected thereto so that the water within the coil may be readily withdrawn. r

The opposing walls of the oven and water tani; 1.1 and 12 are provided with the horizontal. bars 57 which provide supporting tracks :for a grid structure 58 when it is desired to position food above and in spaced relation to the top 36 of the heater unit. The grid 58 is shown in Figures 1 and 3 as in upright position at the back of the stove structure connecting between the oven 11 and tank 12 and it 'is provided, for 'use when in this position, with a frame 59 suitably connected at its outer edges the ehan (SO with the top edge of the grid to maintain this frame in the horizontal position shown in Figure 3.

As an auxiliary to the gasoline hurner, there is provided a coal oil wick 61 which is mounted in suitable annular receptacles 62 supported upon the head 14 of the gasolnc tanh and surrounding the gasoline nozzle 15 in the manner shown in Figure 2.

This oil receptaele is supplied with oil by the pipe line 63 in which a control valve {(34 is placed, the pipe leading from a suitable oil receptaele 65 which is arranged at a suitable point in a higher plane than the wick so that a steady flow of oil to the wiek will result when the valve (34 is opened.

From the foregoing description it will be readily understood that when the gasoline within the tank 13 is lighted the flames will enter the .fire ball 38 and pass thei-ofroni through the slits 41 to the under side of the perforated bottom 49, heating the walls of the chimney 33 and the plate 36 which forms the top for the chinney. At the same time water within the pipe 50 will be heated and will circulate through the coil 54 in the oven 2, returning hy a suitable return pipe line to the tank 12 from whence it came; The oven 2 heated by the hoiling water within the coil i these ovens getting their warmth from the heated chimney, particularly the oven 3. y

As shown in Figur-e 2, the ovens are double walled, the inner top and bottom walls being indicated by the numerals 66 and 67 respectively. The outer walls are also provided with an adjacent inner wall structure similar to the inner walls at the top and bottom of the ovens. These inner walls of the ovens serve to distribute the heat more evenly about the ovens, the heat being carried to the outeri most parts thereof in the space formed between the said inner and outer walls.

Suitablemeans may be employed for allowing the heat to enter the space between the inner and outer walls from the wall of the chimney 33 as for example by providing the adjacent edges of the inner walls of the oven with apertures so that the heat from the chimney may readily enter between the walls.

Any suitable means may be employed for supporting the 'rear edge of the frame 59 when the same is arranged in horizontal position as shown in Figure 3, as for example a cross bar may form a part of the grid 58 upon which the rear edge of the 'rame 59 may rest. It will be readily seen that the frame 59 as well as the grid 58 may be slidably mounted over the stove top 36 upon the strips 57.

Having described my invention, what I claim is 1. In combination in a cooking stove, a, pair of ovens, a supplemental oven mounted above one of the ovens of said pair, a liquid tank mounted above the other of said ovens, a heating unit arranged between said pair of ovens, a water coil arranged to be heated by said unit and receiving water from said tank,

and a. heating coil within one of said ovens and connected to said water coil to receive hot water therefrom, said supplemental oven and liquid tank being arranged in spaced relation at opposite sides of said heating unit and a cooking plate overlying and heated by said unit and arranged between the supplefnentaloven and the tank.

2. In a cooking stove, a heating unit comprising a fuel container, a burner, an inverted substantially bell-shaped chimney, a heating member within the chinney comprisng a sectional ball having an opening formed therein and mounted over said burner with the opening directed downwardly, an apertured flame sp'eader overlying said ball, and a cooking plate closing the upper end of said chimney.

3. In a cooking stove, a pair of ovens arranged in spaced relation, a top wall and a bottom wall, common to the ovens, a heating unit comprising a fuel receptacle designed to be positioned beneath an opening in the bottom wall between the ovens, a burner directed upwardly from the fuel receptacle through said opening, a chimney of inverted substantially bell-shaped design and arranged between the top and bottom walls and having the lower portion overlying the opening in the botom' wall andthe upper portion opening through the top wall, a cooking plate over'- lying' the top of said chimney, a fire ball mounted within the chimney over said burner, and an apertured flame spreader plate ar'- ranged between said fire ball and the cooking plate.

4. In a cooking stove, a pair of ovens arran'ged inspaced relation, a top wall and a bottom wall, common to the ovens, a heating unit comprising a fuel receptacle designed to be positioned beneath an opening in the bottom wall between the ovens, a burner direct*- ed upwardly from the fuel receptacle through said opening, a chimney of inverted substantially bell-'shaped design and 'arranged between the top and bottom walls and having the lower portion surrounding the opening in the bottom wall and the upper portion opening through the top wall, a cooking plate overlying the top of said chimney, a fire ball' mounted within the chimney over said burner, an apertured flame spreader plate arranged between said fire ball and the cooking plate, a water heating coil overlyng said flame spreader plate, means for supplying water to the coil, and a hot water coil arranged in one of said ovens and having connection with said heating coil to receive hot water therefrom.

5. In a cooking stove, a heating unit coni prising a fuel container, a burner, an inverted substantially bell-shaped chimney overlying said burner, a fire ball arranged within said chimney and comprising a bellshaped body made up of a plurality of complemental members of generally arcuate formation and maintained in slightly spaced relation, said ball having the lowermost portion open to permit the flame from the burner to enter therein, a domed apertured spreader plate partitioning the upper portion of the chimney and overlying the fire ball, and a cooking plate closing the top of the chimney.

6. In combination in a stove structure, a

`pair of ovens arranged in spaced relatio'n, a

heating unit including an inverted substantially bell-shaped chimney extending upwardly between said ovens, a cooking plate overlying the top of said chimney and in substantially the same plane as the tops of the ovens, a water heating coil arranged in the upper part of said chimney, a hot water circulating coil connected with. said water heating coil and arranged in one of said ovens, an auxilary oven overlying one of said firstmentioned ovens at one side of the cooking plate, a water tank overlying the other of the first-mentioned ovens and lying at the opposite side of the heating plate, means for supplying water to the heating coil from the so t tank, means for removably arranging a cooking grd between the opposed walls of the auxlary oven and the Water tank and over the cooking plate, and a grd structure normally novubly mounted between the said Walls at the reer of the cooking plate and designed to be mounted on seid grd supporting means.

7. In e cooking store, a fuel contener, a burner, echmney assoceted With the burner, n heating member comprisng a hollow bell having nn opening drected downwardly over the burner and provided With heat escape openngs, and a cooking plate et the upper end ot said chmney overlyng said ball.

8. In a cooking Steve, e fuel eontener, a burner, e ehmney assocated With the burner, a heating' member comprsing a hollow ball removably mounted in the ehimney and har ing an opening drected dowwardly over the 20 burner and further having heat escape openngs therethrough, an apertured heat dffusng plate closng said ch'mney over the heating member, and e cooking plate closng the upper end of the chimney over and in spaced relaton to the first mentoned plate.

9. In a cooking stove, a fuel contaner, a burner, a chmney overlyng and extending upwardly from said burner and having en enlarged upper portion, e heating member within the chmney, eomprsing e sectonal holloW g1obe-1ke member having :m opening overlyng the burner, an apertured domeshaped heat dffusng plate overlying the heating member, a cooking plate overl ying the heat dfiusng member, and a Water heating coil arranged over and about the perphery of the heat diflusing plate.

In ,testmony Whereof I hereunto aflx my signature.

ROBT. LEE MONTGOMERY. 

